1. Studies in the bacteriology of milk;Abd-el-Malek;III. The corynebacteria of milk. J. Dairy Res.,1952
2. Zur Taxonomie der Gattung Pediococcus;Back,1978
3. Zur Taxonomie der Gattung Pediococcus;Back,1978
4. Zur Taxonomie der Gattung Pediococcus;Back,1978
5. Bierschädliche Bakterien;Back,1980